Sorry, but you are wrong...
The first iPhone (EDGE) cost $20 per month for unlimited data. When I switched to the iPhone 3GS (3G), the unlimited data cost increased to $30 per month. Using simple math, this equates to a $10 premium to utilize unlimited data at 3G speeds.
You still have the unlimited data usage, you just cant use up all the bandwidth to do this. Youre not paying for the speed, youre paying for the data usage.
The first iPhone (EDGE) cost $20 per month for unlimited data. When I switched to the iPhone 3GS (3G), the unlimited data cost increased to $30 per month. Using simple math, this equates to a $10 premium to utilize unlimited data at 3G speeds.